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Old 08-08-2010, 09:48 PM   #1
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Default Converting 93 MS to 94

Hey all,
I posted this question in the PnP section but thought it might get more traffic here. Mods, feel free to remove one of these if need be.

I've searched but I haven't been able to find an answer so I'm hoping one of you can help me out. Does anyone know how difficicult it is to make a MS configured for a 1.6 work on a 94 1.8? I think the two cars might have slightly different wiring harnesses that would necessitate changes in the pin outs but I'm not sure. The reason I ask is that I'm looking at a used PnP unit out of a 93 for my 94 and I'm not sure if it will work and/or if the required modifications are worth it. Thanks in advance for your help.
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Old 08-08-2010, 10:00 PM   #2
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Internally, the MS will be identical.

Two extra fuel injector pins on the harness, an easy mod. You'll need to hook up the fuel pump wire, again easy. Analog TPS on the '94... It's mostly just trivial little stuff like that.
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Old 08-09-2010, 09:51 AM   #3
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not much has to change.
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Old 08-10-2010, 11:17 AM   #4
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The MSPNP's fuel pump output circuit would also have to be removed and pin 37 wired straight to the fuel pump pin.
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